You can find a list of non-ethanol gasoline at http://pure-gas.org .
Shell and Marathon seem to have the most pure gasoline available, along with some no-names. Typically, it is available only in premium grade (90-93 octane), though I have seen it at 87 octane as well in farm areas in southern Illinois.
I have a 90 mile commute, and have found gas stations with pure fuel at both ends of the trip and on the highway in the middle.
There are plenty of E-85 stations in Wisconsin. Check:
http://e85vehicles.com/e85-stations/e85-wisconsin.html
Right now, I know of no good reason to use E-85 unless you want high octane with low BTUs. The price is close to on par with E10, and you pay a serious (15-20%) mileage premium.
The 100% gas usually carries a 10 to 20 cent price premium over equivalent E-10, but you also get roughly 2.5% more BTUs, so it is practically a wash, and it makes your engine happier.
I’m either using the wrong gas station or I’m not seeing the E-85 at any of the pumps where I get my gas. But if there are stations in Wisconsin that have it, and it appears there are, I stand corrected.